Ore-separator.



PATENTED APR. 9, 1907.

J. W. GIBSUN. ORE SEPARATOB..

APPLIOATION FILED APR.2,1906.

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A Troie/VE ys Nol 849,385. Y l PATENTED APR. 9, 1907. J. W. GIBSON.

ORE SBPARATOR.

APPLIOATION FILED APR.2,1906.

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l l a' A TTORNEYS UNITED STATES PATENT OFFIOE.

ORE-SEPARATR.

Specification of Letters Patent.

Patente@ April 9, 1907.

Application filed April 2. 190B. Serial No. 309,396.

To a/ZZ whom t may concern.

Be it known that I, JOHN WILLIAM GIB- SON, a citizen of the UnitedStates, residin at Milwaukee, in the county of Milwaukee an State ofWisconsin, have invented a new and useful Ore-Separator, of which thefollowing is a specification.

This invention relates to magnetic-ore separators, and hasfor'itsprincipal object to rovide a simple and eifective mechanism forrapidly and thoroughly separating magnetic ore from gangue.

A further object of the invention is to provide a separating device inwhich electroma nets are associated with a shaking-table of iamagneticmaterial to the end that the magnetic ore may be placed under thecontrol of the electromagnets, while the gangue is left free to move toa discharge point or points.

A still further object of the invention is to provide a mechanism ofthis type in which a table of diamagnetic material is mounted forreciprocatory movement in a plane above and within the field of force ofa pluralit of horseshoe-magnets and in which said tab e is providedwitIi discharge-openings for the gan ue.

ith these and other objects in view, as Willmore fully hereinafterappear, the invention consists in certain novel features of constructionand arrangement of parts, hereinafter fully described, illustrated inthe accompanying drawings, and particularly pointed out in the appendedclaims, it being understood that various changes in the form,proportions, size, and minor details of the structure ma be made withoutde arting from the spirit or sacrificing any of) the advanta es of theinvention.

n the accompanying drawings, Figure 1 is a plan view of an ore-separatorconstructed n accordance with the invention. Fig` 2 is a side elevationof the same. Fig. 3 is a transverse sectional view of the table, drawnto an enlarged scale. Fig` 4 is a detail perspective view of one of theelectromagnets, showing one of the cores and one of the extensionpole-pieces.

Similar numerals of reference are employed to indicate correspondingparts throughout the several figures of the drawings.

The working parts of the machine are supported on a suitable frame, andsaid frame further carries the core members 15 of the electromagnets,there being four series of electroma nets shown in the present instance,

althou h t -s number may be increased or decrease ,if desired.

The electromagnets are provided with polepieces 16, which alternate asto polarity, those of a single series bein N S, N S, &c., and the winings between the core-pieces being arranged to effect or produce thedesired polarity. The ends of the cores are projected upward to a shortdistance below the shaking-table 18, and said pole-pieces are providedwith extensionplates 19, `one end of each plate being cut awa orrecessed, as indicated at 20.

T e shaking-table 18, which may be operated by any well-knownmeanscapable of giving a longitudinal reciprocatory motion, 1s preferablyformed of thin sheet metal of some diamagnetic materialw-such, forinstance, as brass (nickel may be employed)- and said table is arrangedto extend over all of the electroma ets.

The table is vi rated in the direction of its length and operates in thewell-known manner for effecting the travel of any material placed onsuch table, the material being fed to that end of the table nearest theshaft and the magnetic ore being discharged at the opposite end.

The table is provided with a large number of openin s 30, of which thereis one in alinement wit each of the pole-pieces 19, and these openingsserve to permit the gravitational discharge of the gangue while themagnetic ore is retained on the table.

The electromagnets of each series are disposed in stag ered relation to'those of the next series a'n the openings are correspondinglyarranged--that is to say, a straight line drawn arallel with the lengthof the'table across t e plane of the first opening and one of theelectromagnets of the first series will pass midway between two of the oenings and two of the electromagnets of t e next series and will crossthe plane of an opening and an electromagnet of the third series.

If the electromagnets are energized and ore is placed on the table, thevibrations of the latter will carry the ore over the first series ofmagnets-fthat is to say, the series of magnets nearest the free end. Atthis point the magnetic iron will tend to move to a position between thepoles of the horseshoemagnets and to accumulate' in small rows arranged1n loo IIC

between the poles, while the gangue or earthy material not beingmagnetic, will tend to travel along toward the discharge end of thetable and will move over thc poles of the electroma ets without beingaffected thereby and wil fall through the .openings 30 in the table. Asthe material travels along toward the next series of electromagnets andthe rows of magnetic iron,' more or less mechanically mixed with gan ue,are now directed in the pathp'f the poe-pieces of the electromagnets;but as the material moves over this second series of magnets themagnetic iron will move to the right -or to the left to a positionbetween the poles of the horseshoe-magnets of the second series,leavingthe gangue to travel straight ahead and fall through the openingsat the ends of the second series of magnets.

essary, additional series of magnets, the

`gangue traveling in a practically straightv line from end to end of thetable, while the magnetic iron moves in a zigzag path between the seriesof magnets. The bodily movement of the particles of magnetic iron willtend, of course, to travel some of the gangue as the magnetic iron ismoved laterally of the table; but after a number of lateral movements itis found that the gangue is entirely removed, leaving only the magneticore on the table.

The operatinfI means disclosed consists of a shaft 31, which may bedriven by any suitable power (not indicated) carrying an eccentric 32,embraced by an eccentric-strap 33, to which is attached an eccentric-rod34, pivotally connected with the table.

v I claime 1. In an ore-separator, a movable table of diamagneticmaterial and provided with gangue-discharging openings, a plurality ofelectromagnets disposed under said table and means for passing magneticore over the table.

2. In an ore-separator, a mvable table of diamagnetic material andprovided with gangue discharging openings, means for shaking said tableand a plurality of electromagnets disposed under said table.

3. In an ore-separator, a table of diamagnetic material provided withstaggered openings, electromagnets arranged in staggered relation underthe table and means for passing magnetic ore over the table.

4. In'an ore-separator, a table of diamagnetic material provided withstaggered openings, means for. shaking said table and electromagnetsarranged in staggered relation under the table.

5. In an ore-separator, a movable table, a plurality of series ofhorseshoe-magnets arranged underI the table, the magnets of each seriesbeing staggered with relation to those of an 'adjacent series, .thetable being pro- This operation is repeated at the third and fourth,and, if neojacentyseries, the table being provided with openings inalinement with the pole-pieces of the electromagnets.

7. In an ore-separator, the combination with a shaking-table, of aplurality of horseshoe-magnets arranged in staggered order under thetable and having extension polepieces, the table being provided withopenings in alinement with such pole-pieces. and means for passingmagnetic ore 'over the table.

8. In an ore-separator, the combination with a shaking-table, of meansfor operating the same, a plurality of horseshoe-magnets arranged instaggered order under the table and having extension pole-pieces, thetable being provided with openings in alinement with such pole-pieces.

9. In an ore-separator, a longitudinallymovable table, horseshoe-magnetsarranged in series under the table, the magnets of each series beingdisposed in staggered relation with respect to those of the adjacentseries, said magnets having extension pole-pieces, and the table beingprovided with ganguedischarging openings in alinement with thepole-pieces and means for passing magnetic ore over the table.

10. In an ore-separator, a longitudinallymovable table, means forshaking said table, horseshoe-magnets arranged in series under thetable, the magnets of each series being disposed in staggered relationwith respect to those of the adjacent series, said magnets havingextension pole-pieces, and the table being provided withgangue-discharging openings inalinement with the pole-pieces.

11. In an ore-separator, the combination with a reciprocatory table ofdiamagnetic IOO IIB

material, a plurality of horseshoe-magnets v arranged under the tableand having their pole-pieces of different polarity alternating in thewidth of the table, extension pole-pieces for said electromagnets, thetable having gangue-discharging openings in alinement with suchpole-pieces, and means for passing magnetic ore over the table.

12. In an ore-separator, the combination with a reciprocatory table ofdiamagnetic material, of means for operating the same, a plurality ofhorseshoe-magnets arranged under the table, and having their pole-piecesof dierent polarity alternating in the width of the table, and extensionole-pieces for said electromagnets, the table lpiavinggangue-discharging openings in alinement with such pole-pieces.

13. In a magnetic-ore separator, a reciprocatory table having staggereddischargeopenings, electromagnetic means Jfor moving the magnetic ore ina zigzag path across the table and directing the same between theopenings, and means for passing magnetic ore over the table.

14. In a ma netic-ore separator, a reciprocatory table ghaving staggereddischargeo enings, means for operating the same and e ectromagneticmeans for moving the magnetic ore in a zigzag path across the table anddirecting the same between the openings.

15. In a magnetic-ore separator, a shakingtable, means for reciprocatingthe table7 a i5' the table having gangue-discharging openzo ings inalinement with the pole-pieces.

` In testimony that I claim the foregoing as m'y own I havehereto'affixed my signature in the presence of two Witnesses.

JOHN WILLIAM GIBSON. Witnesses:

C. D. BLAcKWooD, GEO. G. MCLAREN.

